980results about How to "Product quality is easy to control" patented technology

The invention discloses a mixed plant culture medium and a preparation method thereof. The culture medium comprises peat and an agricultural and forest residue compositing fermentation medium, wherein the volume proportion of peat to agricultural and forest residue compositing fermentation medium is (30-50):(50-70). The mixed culture medium prepared by the method in the invention has the advantages of balanced nutrition, high nutrition component contents and stable physical property. The mixed culture medium prepared by the method in the invention is reasonable in nutrition structure and convenient for absorption of foliage plants and meets the growth requirement of the foliage plants, thereby improving the culture survival rate and viewing effect of the foliage plants.

The invention provides a medical anti-sticking membrane and a preparation method thereof. The anti-sticking membrane comprises a nanometer frame and hydrosol attached thereon. The hydrosol is internally packed with one or several kinds of styptic medicament or/and anti-sticking medicament. The invention also provides a preparation method of the anti-sticking membrane, comprising the following steps of: preparing electro-spinning solution, styptic medicament and/or anti-sticking medicament-containing hydrosol solution and crosslinker solution; receiving static spinning with the crosslinker solution to obtain the nanometer frame; printing the styptic medicament and/or anti-sticking medicament-containing hydrosol solution onto the nanometer frame by an ink-jet printer, and solidifying the hydrosol solution to obtain the anti-sticking membrane. The anti-sticking membrane has good capability and biological compatibility, and nontoxicity as well as nonirritant, can be completely degraded and absorbed, is compounded with controllably released styptic medicament or/and anti-sticking medicament, has controllable degrading time and speed, and conquers defects of the prior art.

The invention discloses a preparation method of rice noodles. The preparation method comprises the steps of fermenting a raw material, resisting aging, grinding into pulp and steaming and further comprises the step of resisting aging secondarily after the steaming step, wherein the step of resisting aging secondarily comprises the substeps of contacting amylase with a rice slice obtained in the steaming step and putting aside the rice slice for 20-80 minutes at 30-80 DEG C; the amylase is alpha-amylase and/or beta-amylase; and the raw material is rice and/or unpolished rice. By the preparation method, the production process can be conveniently controlled, the rice noodles can be produced on a large scale, and the produced rice noodles are stable in quality and long in shelf life.

The invention discloses a honeycomb-structure sheet material having a fiber-reinforced thermoplastic skin, characterized in that the honeycomb-structure sheet material comprises fiber-reinforced thermoplastic skins, a film, and a thermoplastic honeycomb core, wherein the thermoplastic honeycomb core is arranged between two fiber-reinforced thermoplastic skins and is bonded with the skins though the film. According to the invention, by using bidirectional continuous fibers to reinforce the thermoplastic composite material skins, the advantages of high strength and good toughness are achieved; simultaneously, by using the film to bond, the amount of glues is easy to control, and the phenomenon that liquid enters in honeycomb holes when using liquid glues to bond is not easy to happen; and by using a hot-press roller secondary forming method, the advantages of simple processing devices, easy control of product quality, high production efficiency, easy realization, and convenient popularization are achieved.

The invention provides artificial articular cartilage based on autologous cells and a preparation method thereof. The artificial articular cartilage comprises a nano bionic support and hydrosol adhered to the nano bionic support, wherein one or more cytokines are coated into the hydrosol. The invention also provides the method for preparing the artificial articular cartilage, which comprises the following steps: preparing an electrostatic spinning solution, a cytokine-containing hydrosol solution and a crosslinking agent solution; using the crosslinking agent solution to receive electrostatic spinning so as to prepare the nano bionic support; and using an ink jet printer to print the cytokine-containing hydrosol solution on the nano bionic support, and curing the hydrosol to obtain the artificial articular cartilage. The three-dimensional support adopted by the invention has ideal degradation speed and is degraded after the regeneration of an articular cartilage layer, can meet the requirement of actual clinical application, can be completely degraded, and has good abrasion resistance and lubricity so as to be capable of replacing the cartilage before the regeneration of the articular cartilage layer.

The invention relates to a multi-effect rectifying process of methanol, which belongs to the technical field of separation and purification of chemical products. In the process, a crude methanol raw material of coal-to-methanol is rectified by a pre-rectifying tower, a pressurizing tower I, a pressurizing tower II, an atmospheric tower and a recovery tower in turn at appropriate temperature and pressure so as to obtain a high-purity refined methanol product according with quality requirements. In the flow, methanol steam on the top of the pressurizing tower I is used for providing heat for a reboiler at the bottom of the pressurizing tower II, the methanol steam on the top of the pressurizing tower II is used for providing heat for a reboiler at the bottom of the atmospheric tower, and the pressurizing tower I, the pressurizing tower II and the atmospheric tower form multi-effect rectification; and simultaneously, the methanol steam on the top of the recovery tower is used for providing heat for a reboiler at the bottom of the pre-rectifying tower, and the recovery tower and the pre-rectifying tower form double-effect rectification. The invention provides an energy-saving methanol multi-effect rectifying process method which has the advantages of greatly reduced energy consumption, more stable production process, more easily controlled product quality, higher methanol recovery rate and basically equivalent investment compared with a three-tower rectifying process.

The invention relates to carbon paper and a preparation method thereof and particularly relates to special high-performance carbon paper for a gas diffusion layer of a fuel cell and a preparation method of the carbon paper. By taking short carbon fibers, plant fibers, heat bonding fibers and carbon black as raw materials, the carbon paper is prepared by the following steps: defibering, pulping and proportioning; then carrying out papermaking by adopting a wet-method papermaking process; and carrying out waterproof pigment coating treatment. The ratios of all the raw materials are as follows in parts by weight: 65-75 parts of the short carbon fibers, 10-15 parts of the plant fibers, 10-15 parts of the heat bonding fibers and 0-10 parts of the carbon black. According to the special high-performance carbon paper for the gas diffusion layer of the fuel cell and the preparation method of the carbon paper, a production process combining wet-method formation, hot pressing and coating is adopted and has the characteristics of simple process flow, easiness for controlling product quality, environment-friendly production process and the like; the material ratio of each raw material can be accurately controlled in the production so as to be good for controlling the product quality.

The present invention relates to surface grafting process of preparing hydrophilic nanofiltering film. The surface grafting process is one radiation grafting process, which is low temperature plasma radiation process, ultraviolet radiation process, high energy ray radiation process, etc. The present invention has simple operation, controllable reaction, regulation of separating membrane performance in great range and other features, and is especially suitable for the preparation of hydrophilic nanofiltering film.

The present invention discloses a hollow hard capsule and its preparation method. It is made up by adopting prolanpolysaccharide as main body material and adding gelling agent, coagulant aids, surfactant and humectant through a certain preparation process. Said invention also provides the concrete steps of its preparation method.

The invention provides a preparation method of solid catalyst used in olefinic polymerization catalyst, the method synthetizes the solid catalyst of olefinic polymerization continuously by magnesium powder, simplifies the technology of preparing magnesium compounds solid firstly then preparing the solid catalyst of olefinic polymerization, reduces quantity of equipment needed in industrialization, has advantages of simple technics, easy operation, low industrializing installation cost, low production cost, easy controlled product quality. The ball solid catalyst of olefinic polymerization which D(50) is in range of 10-80 mum is produced through the method of the invention, the catalyst has particle sphericity height L/W<1.4 (L expresses the longest axle of the particle, W is the minimum axle of the particle), has advantages of high polymerization activity, hydrogen regulating sensibility, high isotacticity of the polymer, centralized particle-size distribution.

The invention relates to a waste salt resourceful treatment system which comprises a waste salt carbonization and pyrolysis system, a carbon-containing salt slag dissolving and filtering system and anevaporating and salt separating system in sequential connection, wherein the waste salt carbonization and pyrolysis system can carry out carbonization and pyrolysis treatment on waste salt I composedof sodium chloride, and sodium sulfate monomer salt or mixed waste salt and also can treat tail gas; the carbon-containing salt slag dissolving and filtering system can dissolve and filter the carbon-containing salt slag treated by the waste salt carbonization and pyrolysis system; and the evaporating and salt separating system can carry out evaporation and concentration, fractional crystallization and drying treatment on the strong brine treated by the carbon-containing salt slag dissolving and filtering system to obtain product salt. The waste salt resourceful treatment system takes industrial waste salt as the raw material, removes organic pollutant from waste salt and separates mixed inorganic salt to finally obtain an industrial second-grade salt product, so that recycling of waste salt is realized, and the flue gas generated during the production process is discharged after reaching the standard.

The invention provides a film forming compound with modified starch as the main component, a film forming material containing the compound, and more particularly a hard-shell natural capsule made from the compound. The compound contains no or very little animal protein such as gelatin, etc. The compound can partially or completely replace the gelatin from animals for producing natural hard-shell capsules. The prepared natural capsule shell product has the advantages of excellent film forming property, high strength, good flexibility, high transparency, decomposability and microbial pollution resistance. The main component of the compound, modified starch, has stable quality and highly controllable performance.

The invention provides a nano artificial dura mater capable of being used as a medicine sustained-release system, having the structure which comprises at least two layers, i.e. a hydrophobic anti-blocking electro-spun layer which faces the cerebrum, and a hydrophilic nano cytoskeleton layer which backs on to the cerebrum; and cell factors and/or medicines are arranged in any layer of the artificial dura mater by way of blended spinning. The invention also provides a method for preparing the nano biomimic artificial dura mater. Compared with an artificial mater prepared by the single utilization of the electro-spinning technology, the artificial mater to which the medicines and the cell factors are added by blending technology can effectively prevent infection and faster promote the regeneration process of the artificial mater. The invention also provides a novel medicine loading and releasing mode for treating cerebral diseases, the loaded medicines can be directly and efficiently transferred into the cranial cavity along with the implantation of the dura mate and can be released according to requirements, and therefore the invention realizes favorable treatment effect and has broad application prospect.

The invention relates to a method for refining fasudil hydrochloride. The method comprises the following steps: 1, discoloring, namely adding active carbon into fasudil after resin adsorption, fully mixing the active carbon and the fasudil, filtering the mixture, removing the active carbon, and collecting the filtered solution for later use; 2, washing, namely adding purified water into the discolored solution, fully mixing the solution, separating the solution to remove water phase, and collecting the oil phase for later use; 3, acidifying and salifying, namely adding the purified water intothe oil phase, adjusting pH value of the solution by hydrochloric acid to fully acidify and salify the oil phase, and collecting the water phase for later use; and 4, crystallization, namely, adding n-butyl alcohol into the water phase, fully mixing the solution, then decompressing and azeotropic-crystallizing the solution, duly replenishing the n-butyl alcohol to keep the consistency of the solution, stopping crystallization till the moisture content in the mother solution is reduced to a certain value, and filtering and drying the crystals to obtain a refined fasudil hydrochloride product.

Disclosed is a Lansoprazole sodium intestine-dissolving preparation, which is prepared from Lansoprazole sodium 15-30 parts, thinning agent 150-300 parts, moistening agent or binding agent 20-110 parts, crumbling agent 5-25 parts, lubricating agent 5-15 parts and coating agent 30-100 parts through the steps of disintegrating, sieving, mixing, tabletting, and dressing isolation layer.

The preparation method of a ceramic bullet-proof plate provided by the present invention is to use a solvent-based adhesive to bond bullet-proof ceramic sheets and high-performance fiber laminates together through a negative pressure forming process, and then press and shape the bullet-proof plate in a special mold. The specific preparation method is as follows: firstly, the bulletproof ceramic sheet is neatly placed on a high-performance fiber fabric laminate coated with a solvent-based adhesive according to the designed shape; then, the ceramic sheet and the laminate are placed horizontally on a negative pressure forming machine ( The forming machine is used to form a negative pressure in a certain space), adjust the air pressure to 0.1-0.5 atmospheres, keep it for 5-10 minutes, then take it out, and manually adjust the displacement of the bulletproof ceramic sheet; finally, press and shape it in the mold, The molding condition is 0.3~1Mpa pressure at room temperature for 12 hours.

The invention relates to a novel crystalline form of pregabalin drug for treating epilepsy and neuropathic pain and its preparation method. Compared to others pregabalin with agraphitic form and other forms, pregabalin with the novel crystalline form has good stability and is suitable for mass production. Pregabalin with the novel crystalline form uses Cu-Ka radiation and its X-ray powder diffraction has characteristic peak at 9.5(9.3), 12.3(7.2), 16.7(5.3), 18.4(4.8), 19.9(4.5) and 23.3(3.8) with the coordinate of 2-theta and interplanar spacing (d).

The invention relates to a pitaya rice wine and a preparation method thereof, wherein the pitaya rice wine comprises pitaya and traditional rice wine nutrients, and a mass ratio of the pitaya to the rice wine is 1:3-1:5. The present invention further provides a pitaya rice wine preparation method, which comprises: carrying out crushing and enzymolysis on pitaya, mixing the obtained pitaya into a rice wine to carry out mixing fermentation, and carrying out blending, filling and sterilization to prepare the finished product. The prepared pitaya rice wine has function components of the pitaya and the traditional rice wine, and is a novel rice with characteristics of rich vitamin, rich protein, rich anthocyanin and rich other components, and health care function, wherein the pitaya rice wine research gap is filled.

The invention provides high-flowability pregelatinized starch and a method for preparing the same by mechanical activation, which belong to the technical field of starch modification processing. The method comprises the following steps: uniformly mixing starch and a certain amount of flow aid in a high-speed mixer uniformly, pre-drying the starch by using heat generated in a high-speed mixing process, and controlling the water content in the starch to be lower than 15 percent; and placing the uniformly mixed materials in a ball mill containing a milling medium, well regulating the temperature for constant-temperature dissolution in water, performing mechanical activation for a certain time period, taking the starch out, and sieving the starch with a 80 to 100-mesh sieve. The method has the advantages of simple process and equipment, small investment, environmentally-friendly process, low production cost, easy product quality control and the like. The prepared product has the characteristics of high flowability, loose structure, uniform particles and precision control over pregelatinization degree and can be widely used in industrials and fields of foods, pharmaceuticals, chemicals and the like.